$ gap
┌───────┐ GAP, Version 4.7.7 of 13-Feb-2015 (free software, GPL)
│ GAP │ http://www.gap-system.org
└───────┘ Architecture: x86_64-apple-darwin13.4.0-gcc-default64
Libs used: gmp
Loading the library and packages ...
Error, must not contain '\' or ':' called from
func( C[i] ) called from
List( GAPInfo.DirectoriesSystemPrograms, Directory ) called from
<function "DirectoriesSystemPrograms">( )
called from read-eval loop at line
10 of /Users/satouy/GAP/gap4r7/pkg/Alnuth-3.0.0/defs.g
you can 'quit;' to quit to outer loop, or
you can 'return;' to continue
brk> quit;
$